<html>
    <head></head>
    <body>
        <picture>
            <source media="(max-width: 559px)"
           srcset=" 1x,
             2x">
            <source media="(min-width: 560px) and (max-width: 719px)"
                    srcset=" 1x,
                     2x">
            <source media="(min-width: 720px) and (max-width: 899px)"
                    srcset=" 1x,
                     2x">
            <source media="(min-width: 900px) and (max-width: 1199px)"
                    srcset=" 1x,
                     2x">
            <source media="(min-width: 1200px)"
                    srcset=" 1x,
                     2x">
            <img
                    src=""
                    srcset="http://example.com/product/abc/media/521811121-392x351.jpg 2x">
        </picture>
    </body>
</html>
